Form-cylinder for printing-presses.



S. G. GOSS- I FORM CYLINDER FOR PRINTING PRESSES.

unmnlolrnmn r3123, 1904.

4 SHEETS-Q5321 1.

' PATENTED 0GT.15,"1907.

PATENTEDOGT. 15, 1907.

s. e. sass. FORM CYLINDER FOR PRINTING PRESSES.

APPLIUATIOH FILED FEB. 23, 1906.

4 SHEETS-SHEET 2.

PATENIED pm. 15, 1907. s. G. eoss, FORM CYLINDER FOR PRINTING PRESSES.

'APPLIOATION FILED FEB. 23. 1904.

4 SEEETE-SHEET Si PATENTED OCT. 15, 1907. S. G. GOSS.

FORM UYLINDER FOR PRINTING PRESSES.

APPLIOATIOH Y-TLED FEB. 23, 1904- iSHEETk-SHBET 4.

SAMUEL G. GOSS, OF CHICAGO, ILLINOIS, ASSIGNOR TO GOSS PRINTING PJESSCUMPANY,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FORM-GYLEHDER 750B. ERINTING PEJESSES.

Application filed February 23, 1904-. Serial No. 194,92...

Cool; and Suite of lllinois, have invented certain new undnsei'ulimprovements in berm-Cylinders for Printing-lfresscs, of which thefollowing is a specification, reference hein g had to the accompanyingdrawings.

My invention relates to rotary printing-presses, and has espc lly to dowith form-cylinders for doublewidtli pr cs.

Hcrctoiore considerable dilliculty has been experienced in finding asuti actory construction for securing the forms of such cylinders inplace, and while the devic at present in use cilicienily hold the formson the cylinders they are unsatisfactory and objectionable, iorthrreason that they are so constructed as to make it necessary toprovide a wide space between the adjacent edges of the iornis,-miil ingthe margins of the paper wider than is desirable.

One of the objects of my invention is to avoid this objection, and this1 accomplish by providing rocking or swinging clamping-devices insteadof clamps movable toward and from the edges of the forms in the plane ofthe forms, do the clamps generally in use at the present time. l3 y thus arranging the clamps to rock, so that they swing upward from belowinto engagement with the edge of the form, very little space isnecessary between the forms whereas, with the old style of clamp,su'flicicnt sp- '0 must be provided to permit the clamp tognovc least asfar from the edge of the form as the length of the projecting lip oi theclamp. With my improved clamp, therefore, the forms maybe place'd soclose together as to be almost in Contact with each other, as it is onlynecessary to provide space between them wide enough i or the clamp topass as it moves upward into engagement with the edge of the form.

A further object is to provide an improved construction by which theclamps may be adjusted lengthwise 01'' the cylinder, to accommodateforms of different widths. Sometimes it desired to change the paper froma seven to an eight column sheet, or vice versa, and in my improvedcylinder 1 have provided means by wnich ihe clamping-devices may readilybe adjusted to that end.

While my improvemen s are especially adapted for double width cylinders,they may also be applied to other cylinders.

l accomplish these objects as illustrated in the drawings and ashereinafter described. I

That which I regard as new will be set forth in the claims.

in the accompanying drawings-Figure 1 is a view of my improved cylinder;Fig. 2 is an end viowthereoi,- some parts being in section; Fig. 3 is apartial longitudinal section on line 33 of Fig. 1; Fig. i is a partialcross-section on line l-4 of Fig. 1; Fig. 5 is a view of a cylindershowing a modified arrangement of the operat- 1 ing-devices foractuating the clam-ping or retaining devices; Fi (l is an end view ofthe construction shown in Fig. 5,-some parts being in section; Fig. 7 isan enlarged sectional view, on line 7- 7 of Fig. 6; Fig. 8 is alongitudinal sectional view, on line 8--8 oi 5; Fig. 9 is a erosssection on. line 99 of Fig. ig. it) is an enlargedsectional view, online l0-10 oi Fig. 2; Fig. .1 is n sectional view, on line ll-ll of Fig.10; i2 is n.- section-al view, on line 12-42 of Fig. 10; 13 is apltinview of the parts sho -vnin Fig. 32; Fig. 14 is a persymctive view oione of the clamps; Fig. 15 is a perspective view or the key foroperating the clamping"- devices; Fig. 1G is a partial view of acylinder,--the form being removed; Figs. 17 and 18 are sectional viewsillustrating the arrangement of the clamping devices to accommodate,respectively, forms seven and eight columns wide; and Fig. 1.9 is a.perspective view of one of the dummy blocks.

Referring to the drawings-20 indicates the cylinder.

A, B, O, D indicate the forms, mounted in different zones of saidcylinder. i

21 indicates a retaining-band, which extends around. the cylinder 20centrally thereof, as shown in Fig. i,- being secured in place by screws22 or other suitable means. As best shown in Fig. 3, the edges of thehand. 21 are bevoled,the band being widest on its outer surface, so thatthe edges oi said band are adapted to overlap the beveled inner edges ofthe forms B-(), as shown in Fig. 3, and thereby hold them firmly incontact with the cylinder. The beveled inner edges of the forms A--D aresimilarly held by blocks 23, 24, respectively, best shown in Figs. 1 and5. Said blocks are considerably narrower than the space between forms,and are secured upon the cylinder in the proper position by screws 25.The outer edge of each of said blocks,-i. 2., the edge nearest theadjacent end of the cylinder, is beveled in the same manner as the band21, to receive the beveled inner edges of the forms AD. Any desirednumber of said blocks may be provided,preierably four for each form-seta suitable distance apart. By removing the screws 25 the blocks 23 maybe adjusted upon the cylinder to provide for using wider or narroweriorms, as desired.

The outer edges of the forms B-C are clamped upon the cylinder bysuitable clamping-devices, which are best shown in Figs. 1, 2 and 1.0 to14. As best shown in Figs. 10 and 13, each of said cla1npingdevices iscomposed of a block 26, carrying suitable gripping-lingers 27 andmechanism by which said fingers may be rocked into or out of operativeposition. In the construction shown in Figs. 10 to 14, the blocks 26 arecylindrical in form and areadapted to fit in correspondingly-shapedllltl I the fingers 27 may lie-caused to project beyond thev sock ctsprovided in the surface of the cylinder at the proper points the socketsbeing of such depth that when the blocks 26 are in place, their outersurfaces lie flush with the surface of the cylinder, as shown in Fig.10. As illustrated in Fig. 12, the outer face Ofeach of the blocks 26 isconvex, to conform to the outer surface of the cylinder.

28 indicates a shaft, mounted in the block 2(5,upon

which shaft are loosely mounted the gripping-fingers 27, two of whichare preferably provided in each block, as shown in Fig. 13. 29 indicatesa worm-whecl, which is also loosely mounted upon the shaft 28 betweenthe fingers 27, as shown in Fig. 13. Said worm-wheel is connected tosaid fingers by bolts 30, as shown in Fig. 10, so that said fingers rockwith said worm-wheel. The arrangement is such that by rocking saidworm-wheel rocked by means of a Worm 3], also mounted in the block 26inan inclined position, so that its upper end, which lies adjacent to theouter surface of the block 26, is exposed in the space between the edgesof adjacent forms, as shown in Fig, 10. The inner end of the worm 31 isrotatably secured in the block 26 by means of pins 32 fitted in theblock and lying in an annular groove 33 near the lower end of said worm,as shown in Fig. ll. By this construction, by rotating the worm 3], theworm-wheel 29 may be rotated,-rotating the clamping-fingdrs 27 to movethem into or out of operative position. The socket for they block 26 isso placed with reference to the edge of the form to be clam pcd by itsgripping-fingers 27 that the shaft 28 lies under the edge of the form tobe clamped, so that thclateral movement of the lingers 27 toward andfrom the edge of the form is vcry slight,thcir movement being almostentirely downward or upward". consequently vcry littlc space isnecessary between adjacent forms v The worm 31 is (dated by means of akey 34 having a cross-pin flS'm-ar its lower end which is adapted to fitin a transverse slot 30 in the upper end of the worm, as shown in Figs.10 and 13. By inserting the key. 34 in the slot 36 the worm 3] may bercadilyrotntcd to adjust the position of the clamping-fingers 27.

The block 26 is held in place by screws 237, which sc ew into thesurface of the cylindcr,-thcir heads projecting beyond the prV-riphcryof the block 26, as shown in Fig. l3. Suitable countersunk recesses areprovided in the block 2p and in the cylinder to receive the heads, asalso shown in dotted lines in Fig. l2.

In order to acconnnodatc"forms of different widths I provide two scricsof sockets for the outcr edges of each of the forms'B--C,--onc of saidseries of sockets being nearer the adjacent end of thc cylinder by thewidth of a column. For example, assuming that the forms if are arrangedto print sheets scvcn columns wide, one of the series of sockets will beso placed that the clamps mounted thci'cin will engage the edges of aseven-column form; while the adjacent series of mckcts will be so placedthat its clumps will engage the edge of a form eight columns wide. Thisarrange mcnt may, f course, be varied, to ac ommodate diffcrentvariations in the width of the forms. The

, sockets not in use for clamping-purposes are temporarily which lienext to the ends of the cylinder.

filled by blanks or dummy-blocks 38, as shown in Figs. 16 to 19,-*saidblanks being secured in place in the same manner as the blocks 26. Thesame arrangement is provided for the outer edges of the forms A -D.

Where it is desired to operate the clamping-devices from the end of the,cylinder, instead of providing worms 31 arranged to be operated from thesurface of the cylinder, I employ worm shafts 39 which extend lengthwiseof the cylinder, as shown in Fig. 7 and in dotted lines in Fig, 5,theinner ends of said shafts being provided with worms 40, their outer endsextending out beyond the adjacent end of the cylinder, as shown in Fig.5, where they are provided with squared portions 41 for convenience inrotating them. The operation of the clamps is, however, the same as thatalready described.

While the clamps above described may also be used for securing the outeredges of the forms A-D upon the cylinder, as illustrated in Fig. theiruse at such points is not essential, as there is nothing to prevent thefree outward movement of the clamping-devices At such points I,may,therefore, employ clamping-blocks 42 arranged longitudinally of thecylinder upon screwshafts 43, as illustrated in, Figs. 5, 8 and 9,

In addition to the advantages hcrcinbcfore set forth, my improved clampalso provides for using continuous double-width plates, or plates doublethe size of a page,

since by removing the blocks 23 or 24, and turning the clamping-fingersdown below the surface of the c'ylinder, such double-width forms may besecured thereupon,the band 21 serving to secure the inner margin of suchdouble-Width form upon the cylinder, and the clamps near the end of thecylinder securing the outer end thereof in place. Double-width platesare used I for advertising matter, or any other purpose where it isdesired to carry the printed matter beyond the margin of a single page,r

I wish it to be understood, that my invention is not restricted to thedetails of the construction described,

except in so far as they are particularly claimed, but includes,generically, the subject-matter of the broad claims. Furthermore,although 'I have illustrated and described my invention as applicd to arotary cylinder, -it may also be applied to securing in. positiori theforms of flat-bed presses; and it is to be understood that although inthe claims I have employed the term cylinder asindicating theform-support, said tcrnr is used in a gein-ric sense and should beinterpreted as including not only rotary cylinders, but also any otherform-supprn't,- such as the bed of a llat-ln-d'prcss.

That which i claim as myinvcntion and d sire to sccnre by Letters Patentis,

1. The romhinnlion of :1 form cylinder, a support curricd' thereby nearthe periphery/ thereof, rocking cla'mping' means curried by said supportand so mounted llmt thrsame mn be actuated to be projected beyond thesurface of the cylinder to engage the edge of :1 form and to he relruclod below the. surface thereof, and menus for moving said clumpingmeans into and out of operative position.

2. The eomhinntion of n forni-c \'limlor block lifted in said cylindcr,clumping mcuns pivolully mounted in suid block and so mounted that lhcsumo may be actuated to he swung down below the surface of the cylinderand up :llnn'c snid surl'nce to cngngc flu: edge o! :1 form, and meansfor moving said clumpingmeans into and out of operative position.

3. The combination of a cylinder, a stationary block fitted in a recessin the periphery of said cylinder, clamping means carried by said blockand so mounted that the some may be actuated to be projected beyond thesurface of the cylinder to engage the edge of a form and to be retractedbelow the surface of the cylinder, and means for moving said clamping;means into and out of operative position.

4. The combination of a form cylinder, a stationary block titledtherein, a worm-wheel mounted in said block, one or more rockingclamping fingers connected with said \\'or1n\vhccl so as to rotatecoaxiallytherewith, and a worm for rotating said worm-wheel.

The combination 01' a form-cylinder, a pair of forms thereon adjacent toeach other, abloel: titted in said cylindcr and under one or both 01 theadjacent edges of said forms, clamping means carried by said block andso mounted that the samemay be actuated to be projected beyond thesurface 01 the cylinder to engage the edge of one of said forms and tobe retracted below the surface of the cylinder, and means for movingsaid clamping means into and out of operative position.

6. The comhinationof a form cylinder, a form carried thereby, clampingmeans pivotally mounted in said cylinder under one of the edges of saidform and so mounted that the same may be actuated to be projected beyondthe surface of -the cylinder to engage said edge of the form and to beretracted below the surface of the cylinder, and means for moving saidclamping means into and out of operative position,

7. A clamp for form cylinders. comprising a suitable support adapted tobe fitted to the cylinder so that the surface of said support is flushwith the surface of the cylinder, clumping means carried by said supportand so mounted that the same may be actuated to move out beyond thesurface of the cylinder and inward below the surface thereof, and meanscarried by said support for moving said clamping means into and out ofoperative position.

8. A clamp for form cylinders, comprising a suitable support, clampingmeans mounted in said support and so mounted that the same may beactuated to be projected beyond the surface thereof and to be retractedbelow the surface thereof, and means for moving said clamping means intoand out of operative position.

9. A clamp for form cylinders. comprising a suitable support, clampingmeans pivotally mounted in said support and so mounted that the same maybe actuated to be projected beyond the surface thereof and to beretracted below the surface thereof, and means for moving said clampingmeans into and out of operative position.

10. A clamp for form cylinders, comprising a suitable support,clamping'means pivotally mounted in said support and so mounted that thesame may be actuated to project beyond the surface thereof and to beretracted below the surface thereof, and a worm and Worm-wheel

